Specimen of steel produced by the Basic or Thomas Gilchrist process
Specimen of steel produced by the Basic or Thomas Gilchrist process, 1887. Steel coil
4 coils of steel wire produced by the basic or Thomas Gilchrist method in 1887
Specimen of steel produced by the Basic or Thomas Gilchrist process, 1887. Steel coil
Specimen of steel produced by the Basic or Thomas Gilchrist process, 1887. Steel coil
Specimen of steel produced by the Basic or Thomas Gilchrist process, 1887. Steel coil
Specimen of steel produced by the Basic or Thomas Gilchrist process, 1887. Steel coil